Degradation of pharmaceuticals in different water matrices by a solar homo/heterogeneous photo-Fenton process over modified alginate spheres

Lumbaque, Elisabeth Cuervo; Becker, Raquel Wielens; Araújo, Débora Salmoria; Dallegrave, Alexsandro; Fracari, Tiago Ost; Lavayen, Vladimir; Sirtori, Carla

doi:10.1007/s11356-018-04092-z

Cited by 27 publications

(3 citation statements)

References 46 publications

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“…Han et al [51] found that oxytetracycline elimination was inhibited up to 20% by the presence of 10 mM of phosphates or 10 mM of carbonates, and the tetracycline removal was around 10% lower in their presence. A similar trend was found by Cuervo Lumbaque et al [52], who reported that diazepam, fluoxetine, paracetamol and progesterone removal decreased between 40 and 60%, although other compounds such as furosemide and dipyrone did not show a significant difference in elimination.…”

Section: Photo-fentonsupporting

confidence: 87%

Combination of Photo-Fenton and Granular Activated Carbon for the Removal of Microcontaminants from Municipal Wastewater via an Acidic Dye

Núñez-Tafalla,

Salmerón,

Venditti

et al. 2024

Sustainability

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Combining photo-Fenton and granular activated carbon (GAC) is an alternative to increase the feasibility of using photo-Fenton in full scale. This work is a preliminary study of its viability at natural pH. Both technologies were applied separately and compared with their combination, GAC filtration instead of batch mode, to achieve an approach close to full scale. The target compound considered in this investigation was indigo carmine as a hydroxyl radicals’ probe. The results show that 80% removal of the target compound could be achieved when 20 min of the photo-Fenton treatment time was applied with the optimal dosing of the reagents (5 mg L−1 of iron and 40 mg L−1 of H2O2) working at natural conditions and using ethylenediamine-N,N-disuccinic acid as a chelating agent. Two GAC types, fresh GAC and regenerated, were evaluated on Rapid Small-Scale Columns showing similar breakthroughs and close capacity to adsorb the target compound per gram of GAC. Combining the technologies, with photo-Fenton as the first step and GAC as the second, was performed with 5 min of photo-Fenton treatment time. The 80% removal was maintained during 340 and 170 bed volumes for fresh and regenerated GAC, respectively. Aiming to achieve the maximum reduction of irradiation, 75% of the energy consumption was saved compared to the standalone photo-Fenton process, and the GAC life was extended to a maximum of 7 times.

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Section: Photo-fentonsupporting

confidence: 87%

Combination of Photo-Fenton and Granular Activated Carbon for the Removal of Microcontaminants from Municipal Wastewater via an Acidic Dye

Núñez-Tafalla,

Salmerón,

Venditti

et al. 2024

Sustainability

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“…Among the different polymers, sodium alginate is perhaps the most studied in the photo-Fenton treatment. Contributing to this knowledge, Cuervo Lumbaque et al [106] used three different materials as catalysts in a photo-Fenton process, namely mining waste (a mixture of goethite, magnetite and hematite), Fe 3+ /mining waste and Fe 2+ /mining waste included in sodium alginate spheres. The three catalysts were used to dose three different water matrices (distilled water, simulated wastewater and hospital wastewater) to degrade eight drugs.…”

Section: Photo-fentonmentioning

confidence: 99%

Heterogeneous Advanced Oxidation Processes: Current Approaches for Wastewater Treatment

2022

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Nowadays, water pollution is one of the most dangerous environmental problems in the world. The presence of the so-called emerging pollutants in the different water bodies, impossible to eliminate through conventional biological and physical treatments used in wastewater treatment plants due to their persistent and recalcitrant nature, means that pollution continues growing throughout the world. The presence of these emerging pollutants involves serious risks to human and animal health for aquatic and terrestrial organisms. Therefore, in recent years, advanced oxidation processes (AOPs) have been postulated as a viable, innovative and efficient technology for the elimination of these types of compounds from water bodies. The oxidation/reduction reactions triggered in most of these processes require a suitable catalyst. The most recent research focuses on the use and development of different types of heterogeneous catalysts, which are capable of overcoming some of the operational limitations of homogeneous processes such as the generation of metallic sludge, difficult separation of treated water and narrow working pH. This review details the current advances in the field of heterogeneous AOPs, Fenton processes and photocatalysts for the removal of different types of emerging pollutants.

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“…[13,14] However, these processes have the drawback of removing and transferring the pollutant from one phase to another, which involves a posttreatment step. Since the high cost of solvents and reagents limits the performance and efficiency of conventional chemical processes, advanced oxidation processes (AOPs) are increasingly used to degrade and mineralize recalcitrant pharmaceutical pollutants by forming, in-situ, strong oxidizing species including hydroxyl radicals OH • such as ozonation, [15][16][17] UV/H 2 O 2 processes, [18][19][20] photocatalytic degradation processes, [21][22][23] Fenton and photo-Fenton processes, [24][25][26] plasma processes, etc. [27][28][29][30] Several studies have used response surface methodology (RSM) to investigate the influence of operating parameters and determine the optimal conditions of pharmaceutical pollutants degradation by AOPs.…”

Section: Introductionmentioning

confidence: 99%

Gliding arc plasma treatment of levofloxacin using experimental design approach

Trifi¹,

Trifi

Kouass³

et al. 2023

CLEAN Soil Air Water

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The degradation of levofloxacin, a pharmaceutical pollutant model has been studied by gliding arc plasma (Glidarc). In this work, a full factorial design was applied to investigate the influence of the operating parameters and their interactions on the degradation yield. This experimental design demonstrates that the electrode-solution distance is the most influential factor followed by the concentration of levofloxacin and the applied voltage. Response surface methodology using Doehlert design was adopted to predict the optimal conditions of the plasma treatment. Results showed that for an applied voltage of 7.2 kV, an electrode-solution distance of 2.7 cm, and an initial concentration of 45.6 mg L −1 , the degradation yield reached 52.81 ± 1.19% after 90 min of plasma treatment, which corresponds to an energy yield of 40.1 mg kW −1 h −1 .In addition, to develop a cost-effective system for the degradation of pharmaceutical pollutants, biodegradability of the plasma pretreated solutions was evaluated. Resultsshowed that a readily biodegradable solution was obtained after only 30 min of plasma pretreatment. Hence, the feasibility and the efficiency of coupling plasma to biodegradation processes were confirmed. Moreover, coupling plasma to photocatalysis was carried out and results showed that 45 min of plasma treatment followed by 40 min of photocatalytic treatment achieved 100% degradation that neither the plasma process nor the photocatalysis process can reach alone.

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Degradation of pharmaceuticals in different water matrices by a solar homo/heterogeneous photo-Fenton process over modified alginate spheres

Cited by 27 publications

References 46 publications

Combination of Photo-Fenton and Granular Activated Carbon for the Removal of Microcontaminants from Municipal Wastewater via an Acidic Dye

Combination of Photo-Fenton and Granular Activated Carbon for the Removal of Microcontaminants from Municipal Wastewater via an Acidic Dye

Heterogeneous Advanced Oxidation Processes: Current Approaches for Wastewater Treatment

Gliding arc plasma treatment of levofloxacin using experimental design approach

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